Charge Air Cooler Coolant Pump B Control Circuit/Open

Where it lives

For P2CAD, the circuit described runs through the pump. The description of P2CAD reports the pump as open.

Check these first

• An open in the charge air cooler coolant pump B control circuit
• A pump B that failed with an open winding
• Corrosion at the pump B control connector
• A control driver fault feeding pump B

What to do next

1. Command charge air cooler coolant pump B on a scan tool
2. Test the pump B control circuit for an open
3. Measure pump B coil resistance
4. Inspect the pump B connector for corrosion
5. Replace charge air cooler coolant pump B if the circuit tests good
6. Clear the code and retest

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